Recently, I read this article on how a newborn can ruin a marriage. As a mother who has given birth to five children, I can relate. Who the heck wants to be intimate when you're up every 2-3 hours feeding an eating machine? When that child is napping the only thing you can think about is sleep.
You're constantly tired and even cranky. Sex is the furthest thing from your mind. And it's the reason you're in the situation.
So yes, I can agree with this article. The only thing I'd add is if you truly love your mate, you'll do whatever you can to make it work. Someday that child will be off on his or her own and it'll only be you and your mate. Remember why you're there. You committed to a lifetime...good or bad. :o)